LPigott
Loc: Monterey Peninsula, CA
Taking an Adv. Photography class we were given an assignment to utilize Manual Focus. Found I could grab a photo previously unavailable to me. Getting this close in a dark area prevented the Auto Focus from functioning. MF did the trick. Feel I gained a useful option for a difficult situation ...
Gene51
Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)
This is good, but I hope that the instructor covered the differences between the old DSLR cameras and the current ones.
There are two fundamental and important differences
Old cameras have great focusing aids in addition to a ground glass. Older cameras had either microprism or split prism or both.
Older lenses had a longer "throw" on the focus ring - half a turn or more, making it easier to fine tune focus. Newer lenses have 1/4 turn at most. A slight movement on the focus ring gets you out of focus quickly.
jpgto
Loc: North East Tennessee
Experimenting is always fun and the results are amazing.
Gene51 wrote:
This is good, but I hope that the instructor covered the differences between the old DSLR cameras and the current ones.
There are two fundamental and important differences
Old cameras have great focusing aids in addition to a ground glass. Older cameras had either microprism or split prism or both.
Older lenses had a longer "throw" on the focus ring - half a turn or more, making it easier to fine tune focus. Newer lenses have 1/4 turn at most. A slight movement on the focus ring gets you out of focus quickly.
This is good, but I hope that the instructor cover... (
show quote)
Don't the AF macro lenses have a long throw inspite of being AF lenses?
I agree that most AF are more difficult to manually focus with the short throw and no focus visual aids.
Thank you for the great post and helpful to me, at least, post.
LPigott wrote:
Taking an Adv. Photography class we were given an assignment to utilize Manual Focus. Found I could grab a photo previously unavailable to me. Getting this close in a dark area prevented the Auto Focus from functioning. MF did the trick. Feel I gained a useful option for a difficult situation ...
Nice. Are you using the Live View screen with maximum magnification to confirm focus?
Architect1776 wrote:
Don't the AF macro lenses have a long throw inspite of being AF lenses?
I agree that most AF are more difficult to manually focus with the short throw and no focus visual aids.
Thank you for the great post and helpful to me, at least, post.
My AF macro lenses have long throws... I think the AF macros are the only AF ones that do....
Screamin Scott wrote:
My AF macro lenses have long throws... I think the AF macros are the only AF ones that do....
I figured that they did.
I just didn't have access to mine when I answered.
Thank you so much for the confirmation on the macro having a long throw.
i almost never auto focus . doing it by hand force you to see what you are doing .
Gene51 wrote:
This is good, but I hope that the instructor covered the differences between the old DSLR cameras and the current ones.
There are two fundamental and important differences
Old cameras have great focusing aids in addition to a ground glass. Older cameras had either microprism or split prism or both.
Older lenses had a longer "throw" on the focus ring - half a turn or more, making it easier to fine tune focus. Newer lenses have 1/4 turn at most. A slight movement on the focus ring gets you out of focus quickly.
This is good, but I hope that the instructor cover... (
show quote)
Very helpful info. thanks for posting .
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